<template>
  <div class="login_container">
    <div class="login_box">
      <div class="avatar_box">
        <img src="../assets/logo.png" />
      </div>
      <el-form
        ref="loginFormRef"
        label-width="0px"
        class="login_form"
        :model="loginform"
        :rules="loginFormRules"
      >
        <el-form-item prop="username">
          <el-input
            placeholder="请输入用户名"
            prefix-icon="iconfont icon-yonghuming"
            v-model="loginform.username"
          >
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            placeholder="请输入密码"
            prefix-icon="iconfont icon-mima1"
            show-password
            v-model="loginform.password"
            @keyup.native="keyDown"
          >
          </el-input>
        </el-form-item>
        <el-form-item class="btns">
          <el-button type="primary" @click="login"
            >登录</el-button
          >
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
import { showLoading, hideLoading } from '../util/loading'
export default {
  data() {
    return {
      // 表单数据绑定
      loginform: {
        username: 'admin',
        password: '123456'
      },
      // 表单验证规则
      loginFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6到 15个字符', trigger: 'blur' }
        ]
      }
    }
  },

  methods: {
    // 重置表单
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields()
    },

    // 表单预验证
    login(e) {
      showLoading()
      this.$refs.loginFormRef.validate(async valid => {
        if (valid === true) {
          const { data: res } = await this.$http
            .post('login', this.loginform)
            .catch(error => {
              console.log(error)
              this.$message.error(error)
              hideLoading()
            })
          console.log(res)
          if (res.meta.status === 200) {
            this.$message.success('登录成功')
            hideLoading()
            window.sessionStorage.setItem('token', res.data.token)
            this.$router.push('/home')
          } else {
            this.$message.error(res.meta.msg)
            hideLoading()
          }
        }
      })
    },
    // 按下enter键登录
    keyDown(e) {
      console.log(e)
      if (e.keyCode === 13) {
        this.login()
      }
    }
  }
}
</script>

<style scoped>
.login_container {
  background-color: #2b4b6d;
  width: 100%;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.avatar_box {
  width: 130px;
  height: 130px;
  position: absolute;
  border: 1px solid #eee;
  border-radius: 100%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  background-color: #fff;
}
.avatar_box img {
  width: 100%;
  height: 100%;
  border-radius: 100%;
  background-color: #eee;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
</style>
